Best aluminum heads out there??
12-01-2014, 03:37 PM
#11
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It's not all about the volume, it's the velocity. My 540s made 680 with full cnc ported oval port AFRs, 4150 flange Victor Jr with a Reher Morrison adapter below a 4500 flange Dominator, again, for the velocity. That was at 5500. I don't feel like they were limited by the oval port heads.
12-01-2014, 03:45 PM
#12
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Did you measure the runners after the full cnc porting? I understand what you're saying about port velocity but I've also seen several examples of 305-315 make plenty of power over a wide range of rpm. Mercruiser used 319 cc rect ports on 365's seemed to have enough velocity for that.
Last edited by payuppsucker; 12-01-2014 at 03:47 PM.
12-01-2014, 03:59 PM
#14
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I don't think you can go wrong with either Dart or AFR's you will make good power with either ... just depends on alot of other factors that will make the difference JMO .
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12-01-2014, 04:07 PM
#18
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I may have missed it, 502 MPI, EFI, or carb, a restricted plenum and TB will also be a determinating factor to runner size. JMO, also depends on the budget, I don't think you can get a full CNC'd Brodix, Dart, for the same price as the AFR's
Last edited by F-2 Speedy; 12-01-2014 at 04:20 PM.
12-01-2014, 04:42 PM
#19
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Bang for the buck, AFR 305 with CNC chamber option. If you are seeking max effort, and don't mind spending the extra dough, the full CNC 315 version would be my choice.
Darts full CNC 335 is a nice head as well, but not cheap. I'm not too up to date on the brodix stuff, although their big ovals seem pretty bad azz too.
Darts full CNC 335 is a nice head as well, but not cheap. I'm not too up to date on the brodix stuff, although their big ovals seem pretty bad azz too.
12-01-2014, 05:20 PM
#20
It sounds like what ever you do you better get the rite heads for the 540 cuz its going to happen if you are thinking about it now. I am on my 4th set of bigger heads for the same 2 engines in my apache. 1pair-312cc 2pair-351cc 3pair-383cc 4pair-415cc All Brodix
My first set where to small motors were turds. Second set ran very good.
Hope I helped your addiction! Don't build a turd!
My first set where to small motors were turds. Second set ran very good.
Hope I helped your addiction! Don't build a turd!
